1 for (int c0 = 1; c0 <= 18; c0 += 1) 2 for (int c1 = 1; c1 <= 9; c1 += 1) { 3 if (c0 % 2 == 0) 4 s0(c1, c0 / 2); 5 if (c0 <= 9) 6 s1(c1, c0); 7 } 8